Preliminary data suggests livestock conflicts were the primary cause of known grizzly bear deaths outside of Greater Yellowstone Ecosystem monitoring areas in 2020, scientists said at a meeting Wednesday afternoon.
Frank van Manen, supervisory research biologist for the Interagency Grizzly Bear Study Team, presented highlights from this year’s grizzly bear research and monitoring report to the Yellowstone Ecosystem Subcommittee of the Interagency Grizzly Bear Committee on Wednesday.
Charts that van Manen presented showed that out of 18 known grizzly bear deaths outside of the monitoring area this year, 12 occurred because of livestock conflicts, according to preliminary data. The grizzly bear demographic monitoring area (DMA) is a nearly 20,000 square mile zone that spans outward from Yellowstone National Park. Scientists estimate bear numbers within that area.
All the other 25 known grizzly bear mortalities that occurred inside of the DMA in 2020 were caused by human-related conflicts, according to the